The MCP79412-I/ST is a battery-backed I¬=C real-time clock/calendar from Quarktwin Technology Ltd. It features a comprehensive timekeeping capability, tracking hours, minutes, seconds, day of week, day, month, and year, with leap year compensation until 2399. The device operates within a voltage range of 1.8V to 5.5V and has a low timekeeping current of 1.2 ¬µA at 3.3V, making it suitable for low-power applications. This part includes 1 Kbit of EEPROM memory, which is software write-protectable, and 64 bytes of battery-backed SRAM. Additionally, it has a 64-bit protected EEPROM area for storing unique identifiers, such as the EUI-64,Ñ¢ MAC address. The MCP79412-I/ST supports dual programmable alarms and features a versatile output pin that can be configured for clock output, alarm output, or general-purpose output. The device communicates via a 2-wire I¬=C interface with a clock rate of up to 400 kHz and operates over an industrial temperature range of -40¬8C to +85¬8C. It is available in an 8-lead TSSOP package, making it suitable for space-constrained designs. The automatic switchover to battery backup ensures continued operation during power interruptions, with timestamps logged for power-fail events.
"Real Time Clock (RTC) IC Clock/Calendar 64B, 1Kb I²C, 2-Wire Serial 8-TSSOP (0.173"", 4.40mm Width)"
IC RTC CLK/CALENDAR I2C 8TSSOP Product overview: MCP79412-I/ST from Microchip Technology is a Clock and Timing IC for clock generation, timing distribution, synchronization, RF systems, communication hardware, and digital boards. It is useful for engineers and buyers comparing datasheets, replacement parts, BOM lines, package options, lifecycle status, and procurement availability. Key searchable attributes include key electrical ratings, package details, and application requirements. Search-friendly keywords include clock generator, oscillator, timing, synchronization, Clock and Timing IC, Real Time Clocks ICs. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 690-MCP79412-I/ST can be used for catalog matching and distributor lookup.
IC RTC CLK/CALENDAR I2C 8-TSSOP
REAL TIME CLOCK/CALENDAR, -40 TO 85DEG C; Date Format:YY-MM-DD-dd; Clock Format:HH:MM:SS; Clock IC Type:Calendar, Clock; Supply Voltage Min:1.8V; Supply Voltage Max:5.5V; Clock IC Case Style:TSSOP; No. of Pins:8Pins; Product Range:- RoHS Compliant: Yes
IC RTC CLK/CALENDAR I2C 8TSSOP
Real Time Clock (RTC) IC Clock/Calendar 64B, 1Kb I²C, 2-Wire Serial 8-TSSOP (0.173", 4.40mm Width)
| DigiKey | ERSAELECTRONICS PTE. LTD. | Lingto Electronic Limited | Newark, An Avnet Company | Shenzhen Shengyu Electronics Technology Limited | Quarktwin Technology Ltd. | |
|---|---|---|---|---|---|---|
| Product Category | IC Clocks | IC Timers | IC Clocks | IC Clocks | IC Clocks | IC Clocks |
| Product Number | MCP79412-I/ST-ND | 690-MCP79412-I/ST | MCP79412-I/ST | 85R1782 | MCP79412-I/ST | MCP79412-I/ST |
| Product Name | Real Time Clocks | Clock and Timing IC | Clock/Timing - Real Time Clocks | Real Time Clock/calendar, -40 To 85Deg C; Date Format Microchip | Integrated Circuits (ICs) - Clock-Timing - Real Time Clocks | Real Time Clocks |
| Device Type | Real Time Clock | Real Time Clock | Calendar, Clock; Real Time Clock | Clock/Calendar; Real Time Clock | Real Time Clock | |
| Package Type | Surface Mount; TSSOP; "8-TSSOP (0.173"", 4.40mm Width)" | Tube | TSSOP | Surface Mount; Surface Mount | Surface Mount; SSOP; 8-TSSOP (0.173\", 4.40mm Width) | |
| Supply Voltage | 1.8 to 5.5 volts | 1.8 to 5.5 volts | 1.8 to 5.5 volts | 1.8 to 5.5 volts |
